Table 2

Stepwise adjusted odds ratios (OR) of physical activity and media use according to
parental education, boys and girls 11–17 years

High leisure time activity

High media use

Basic modela

Final modelb

Basic modela

Final modelc

OR 95% CI

OR 95% CI

OR 95% CI

OR 95% CI

Boys (n = 2677)

Parental education

Primary

1.0

1.0

1.0

1.0

Secondary

0.9 (0.8-1.2)

0.9 (0.7-1.2)

0.8 (0.6-1.0)

0.9 (0.7-1.2)

Tertiary

0.8 (0.6-1.0)

0.8 (0.6-1.1)

0.5 (0.4-0.7)

0.7 (0.5-0.9)

Parental occupation

Low

1.0

1.0

1.0

1.0

Middle

0.8 (0.7-1.0)

0.8 (0.7-1.0)

0.5 (0.4-0.7)

0.6 (0.5-0.7)

High

0.8 (0.6-1.0)

0.9 (0.7-1.1)

0.5 (0.4-0.6)

0.6 (0.5-0.8)

Household income

Low

1.0

1.0

1.0

1.0

Middle

0.9 (0.8-1.1)

1.0 (0.8-1.2)

0.8 (0.6-1.0)

0.9 (0.7-1.2)

High

0.9 (0.7-1.1)

0.9 (0.7-1.2)

0.7 (0.5-0.8)

1.0 (0.8-1.3)

Girls (n = 2574)

Parental education

Primary

1.0

1.0

1.0

1.0

Secondary

1.3 (1.0-1.6)

1.2 (0.9-1.5)

0.7 (0.6-0.9)

0.8 (0.6-1.1)

Tertiary

1.2 (0.9-1.5)

1.0 (0.7-1.3)

0.3 (0.3-0.5)

0.5 (0.3-0.6)

Parental occupation

Low

1.0

1.0

1.0

1.0

Middle

1.1 (0.9-1.4)

1.1 (0.9-1.4)

0.5 (0.4-0.7)

0.7 (0.6-0.9)

High

1.3 (1.0-1.6)

1.2 (0.9-1.6)

0.5 (0.4-0.6)

0.7 (0.6-1.0)

Household income

Low

1.0

1.0

1.0

1.0

Middle

0.9 (0.7-1.1)

0.9 (0.7-1.1)

0.7 (0.6-0.9)

0.9 (0.7-1.2)

High

1.2 (1.0-1.5)

1.1 (0.9-1.4)

0.6 (0.5-0.7)

1.0 (0.8-1.3)

aModel adjusted for age groups and region strata East–west Germany (separate models
for education, occupation and income). bAdjusted as the basic model and also for ‘physical wellbeing’ , ‘parental support
for leisure time activity’ among boys, and ‘BMI-for-age’ among boys (education, occupation
and income in combined model). cAdjusted as the basic model and also for ‘BMI-for-age’ among girls, ‘physical wellbeing’
among girls and ‘parental support for leisure time activity’ (education, occupation
and income in combined model).